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Topic: NASA

August 17, 2017 |

Clarksville, TN – On Monday, August 21st, 2017, the day of the Great American Eclipse, a large digital screen in New York City’s Times Square will broadcast images captured from the Austin Peay State University observatory.

A production crew with NASA TV will be on campus that day, filming the total solar eclipse, because the University is one of the best places in the world to witness the historic event.

Greenbelt, MD – Our Sun is active: Not only does it release a constant stream of material, called the solar wind, but it also lets out occasional bursts of faster-moving material, known as coronal mass ejections, or CMEs.

NASA researchers wish to improve our understanding of CMEs and how they move through space because they can interact with the magnetic field around Earth, affecting satellites, interfering with GPS signals, triggering auroras, and — in extreme cases — straining power grids.

While we track CMEs with a number of instruments, the sheer size of the solar system means that our observations are limited, and usually taken from a distance.

ESA and NASA’s Solar and Heliospheric Observatory observed a coronal mass ejection erupting from the Sun on Oct. 14, 2014. Scientists went on to track this coronal mass ejection through the solar system using 10 NASA and ESA spacecraft. (The bright light appearing at roughly 2 o’clock is the planet Mercury.) (ESA/NASA/SOHO)

Greenbelt, MD – Venus looks bland and featureless in visible light, but change the filter to ultraviolet, and Earth’s twin suddenly looks like a different planet. Dark and light areas stripe the sphere, indicating that something is absorbing ultraviolet wavelengths in the planet’s cloud tops.

A team of scientists and engineers working at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, has received funding from the agency’s Planetary Science Deep Space SmallSat Studies, or PSDS3, program to advance a CubeSat mission concept revealing the nature of this mysterious absorber situated within the planet’s uppermost cloud layer.

As seen in the ultraviolet, Venus is striped by light and dark areas indicating that an unknown absorber is operating in the planet’s top cloud layer. The image was taken by NASA’s Pioneer-Venus Orbiter in 1979. (NASA)

Greenbelt, MD – On August 21st, 2017, the Moon will slide in front of the Sun and for a brief moment, day will melt into a dusky night. Moving across the country, the Moon’s shadow will block the Sun’s light, and weather permitting, those within the path of totality will be treated to a view of the Sun’s outer atmosphere, called the corona.

But the total solar eclipse will also have imperceptible effects, such as the sudden loss of extreme ultraviolet radiation from the Sun, which generates the ionized layer of Earth’s atmosphere, called the ionosphere. This ever-changing region grows and shrinks based on solar conditions, and is the focus of several NASA-funded science teams that will use the eclipse as a ready-made experiment, courtesy of nature.

The Moon’s shadow will dramatically affect insolation — the amount of sunlight reaching the ground — during the total solar eclipse. (NASA’s Scientific Visualization Studio)

Pasadena, CA – If we want to know more about whether life could survive on a planet outside our solar system, it’s important to know the age of its star. Young stars have frequent releases of high-energy radiation called flares that can zap their planets’ surfaces.

If the planets are newly formed, their orbits may also be unstable. On the other hand, planets orbiting older stars have survived the spate of youthful flares, but have also been exposed to the ravages of stellar radiation for a longer period of time.

This illustration shows what the TRAPPIST-1 system might look like from a vantage point near planet TRAPPIST-1f (at right). (NASA/JPL-Caltech)

Greenbelt, MD – The total solar eclipse crossing America on August 21st, 2017 will be the first eclipse to march from sea to shining sea in nearly 100 years. This astronomical event is a unique opportunity for scientists studying in the shadow of the Moon, but it’s also a perfect opportunity to capture unforgettable images.

Whether you’re an amateur photographer or a selfie master, try out these tips for photographing the eclipse.

People watch a partial eclipse in Belfast, Northern Ireland, on March 20, 2015. (Robin Cordiner)

Washington, D.C. – On Monday, August 21st, 2017, all of North America will be treated to an eclipse of the Sun, and NASA Television will carry it live from coast to coast from unique vantage points on the ground and from aircraft and spacecraft, including the International Space Station. Coverage will be featured during the live four-hour broadcast Eclipse Across America: Through the Eyes of NASA.

Programming begins at 11:00am CDT (noon EDT) with a preview show hosted from Charleston, South Carolina. The main show begins at 12:00pm CDT (1:00pm EDT) and will cover the path of totality the eclipse will take across the United States, from Oregon to South Carolina.

This illustration depicts a rare alignment of the Sun and Moon casting a shadow on Earth. (NASA)

Greenbelt, MD – A novel mission concept involving two CubeSats connected by a thin, miles-long tether could help scientists understand how the Moon got its mysterious “tattoos” — swirling patterns of light and dark found at more than 100 locations across the lunar surface.

NASA’s Planetary Science Deep Space SmallSat Studies, or PSDS3, program recently selected a team at the Goddard Space Flight Center in Greenbelt, Maryland, to further develop a mission concept called the Bi-sat Observations of the Lunar Atmosphere above Swirls, or BOLAS. The study, led by Goddard Principal Investigator Timothy Stubbs, could lead to the first tethered planetary CubeSat mission, Stubbs said.

This artist’s drawing shows how two CubeSats, connected by a miles-long tether, would gather measurements on the moon. (NASA)

Washington, D.C. – NASA’s Cassini spacecraft will enter new territory in its final mission phase, the Grand Finale, as it prepares to embark on a set of ultra-close passes through Saturn’s upper atmosphere with its final five orbits around the planet.

Cassini will make the first of these five passes over Saturn at 9:22pm PDT Sunday, August 13th (12:22am EDT Monday, August 14th). The spacecraft’s point of closest approach to Saturn during these passes will be between about 1,010 and 1,060 miles (1,630 and 1,710 kilometers) above Saturn’s cloud tops.

This artist’s rendering shows Cassini as the spacecraft makes one of its final five dives through Saturn’s upper atmosphere in August and September 2017. (NASA/JPL-Caltech)

Clarksville, TN – On Monday, August 21st, 2017, the heavens—in the words of English poet Lavinia Greenlaw—will throw a “celestial dimmer switch” during the 2017 Total Solar Eclipse, and as excitement builds across the country for this cosmic spectacle, Austin Peay State University is hosting several events, including an official NASA viewing parties at the campus’ Fortera Stadium.

Austin Peay is hosting several events for the upcoming 2017 Total Solar Eclipse.